SANIQ 10 (Lefthand OS) soon to be released

03/11/2012 4 comments

LeftHand OS v10.0: More integration, performance and management capabilities

On the 4th of December the next version of SAN/IQ (now named Lefthand OS) will be released with some  nice new features:

  • Increased Windows integration – We now offer Active Directory integration which will allow administrators to manage user authentication to HP StoreVirtual Storage via the Windows AD framework. This simplifies management by bringing SAN management under the AD umbrella. With 10.0 we are also providing support for Windows Server 2012 OS.
  • Improved performance – The engineering team has been working hard with this release and one of the great benefits comes with the performance improvements. LeftHand OS version 10.0 has numerous code enhancements that will improve the performance of HP StoreVirtual systems in terms of application performance as well as storage related functions such as snapshots and replication.  The two major areas of code improvements are in multi-threading capabilities and in internal data transmission algorithms.
  • Increased Remote Copy performance – You’ll now experience triple the performance through optimization of the Remote Copy feature that can reduce you backup times by up to 66%.
  • Dual CPU support for VSA – In this release, the VSA software will now ship with 2 vCPUs enabled. This capability, in addition multi-threading advancements in 10.0, enhances performance up to 2x for some workloads. As a result of this enhancement, we will now also support running 2 vCPUs in older versions of VSA. So if you’ve been dying to try it, go ahead. Our lab tests with SAN/iQ 9.5 and 2 vCPUs showed an up to 50% increase in performance.
  • Other performance improvements – 10.0 has been re-engineered to take advantage of today’s more powerful platforms, specifically to take better advantage of multi-core processors, and also improves the performance of volume resynchronization and restriping and merging/deleting snapshot layers.

See for more info.


Nice article about VMWare storage acronyms, concepts and terminology.

11/07/2012 1 comment

Today i found a nice blog artible describing the working of VMWare Storage.

This article helped me finding an answer to the following question:
Why it takes a while for a returned IO path to actually process IO?

The answer: The PSP check every 300 seconds if the path is active again. SATP is responsible for doing the failover.

You can find the article here

Thanks Didier

Categories: Storage, VMWare Tags: , , , ,

Unisphere Service Manager Engineering mode

03/07/2012 Leave a comment

Ever needed to uninstall installed features from your VNX?

This option is not available in the Service Manager until you press Ctrl-shift-f12 and enter the password SIR (or messner)

This command let you enter the engineering mode.

Categories: EMC

SANIQ 9.0 Released!

18/11/2010 Leave a comment

HP Released SAN/IQ 9.0 today.

The 9.0 release is a comprehensive release that includes enhancements in the following areas:

  • New global configurations — Email, SNMP, DNS, remote syslog, and upgrades are done at the management group
  • Automated online upgrade management — Identifies, downloads, and applies updates more easily
  • Alarms and Events enhancements — Reduced quantity, configured globally, new severity levels
  • Storage system alarms
  • Network RAID 5 and 6 enhancements — No longer require snapshots, Network RAID 5 on clusters of three or more, Network RAID 6 on clusters of five or more
  • VMware VAAI vStorage offloads — Full copy, Block Zeroing, and Hardware Assisted Locking for faster VM deployment and less load on ESX servers
  • New Best Practice Analyzer rules — Checks for consistent RAID and network settings
  • P4000 Centralized Management Console enhancements — More map views, new volume icons that represent status and RAID, reduced numbers of pop ups, user ability to change CMC font sizes and default names
  • Host server cluster management — Automated assignment of volumes to many servers that make up an application cluster
  • Server aware sites — Servers and server clusters can be assigned to sites to improve load balancing
  • HP Insight Remote Support replaces LeftHand Service Console
  • HP SIM monitoring support (6.2)Localization for Japan, China, and Korea
  • MPIO improvements — Host network load balancing in DSM for MPIO and native windows MPIO support
  • iSCSI session management improvements — Sessions are automatically rebalanced after systems come back online and when systems are added. Sessions are automatically disconnected when volumes are unassigned from servers
  • Improved PGR / Microsoft Failover Cluster scalability — Up to 256 iSCSI sessions per volume with Microsoft Failover Clusters utilizing PGR
  • Cross-Version Remote Copy — Release 9.0 SAN/iQ software can remote copy to and from version 8.5, 8.1, and 8.0 management groups
  • Remote Copy bandwidth — Now managed independently of management group bandwidth
  • CLI improvements — New commands to manage schedules, SNMP, and servers
  • Application-Managed Snapshots support Microsoft Windows CSV
Categories: HP P4000, Storage

Re-image OEM installed Windows 7 PC’s

09/08/2010 Leave a comment

Today i have investigated if Microsoft licensing allows to reimage pre installed Windows 7 OEM machines with a new Windows 7 image using VLK media.

Microsoft fully allows this cause each Microsoft license included a reimage right provided that the same version is used. So for example OEM professional -> VLK professional.

You need at least to have one VLK license of the product to obtain install media and a VLK license key.

A VLK has a limited number of activations. When this number is reached or too low you can contact Microsoft Activation Center or send an email to and include your agreement information, customer name and contact information, business justification for the additional activations requested (i.e.: re-imaging), the product key and the amount of additional activations you would like to have added to the key

For more offical information see:

Categories: Microsoft, Windows 7

Nominated for sysadmin of the year 2010

20/07/2010 Leave a comment
Categories: General/Other

“Cannot change the host configuration” when adding an existing VMFS

01/07/2010 Leave a comment

Today i have experienced a weird problem with vCenter. I was adding an existing VMFS lun to our vSphere cluster. Adding the VMFS to the first node worked flawlessly but all other nodes fails with the error “Cannot change the host configuration”

After some googling i found out that i was not the only one with this problem. It seems to be a bug in vCenter. You can work around this problem by connecting to the ESX server directly with the viclient. Adding the VMFS works perfect this way.

also see:

Categories: VMWare, vSphere